Functional diversification of the dehydrin gene family in apple and its contribution to cold acclimation during dormancy.

Dehydrins (DHN) are proteins involved in plant adaptive responses to abiotic stresses, mainly dehydration. Several studies in perennial crops have linked bud dormancy progression, a process characterized by the inability to initiate growth from meristems under favorable conditions, with DHN gene expression. However, an in-depth characterization of DHNs during bud dormancy progression is still missing. An extensive in silico characterization of the apple DHN gene family was performed. Additionally, we used five different experiments that generated samples with different dormancy status, including genotypes with contrasting dormancy traits, to analyze how DHN genes are being regulated during bud dormancy progression in apple by real-time quantitative polymerase chain reaction (RT-qPCR). Duplication events took place in the diversification of apple DHN family. Additionally, MdDHN genes presented tissue- and bud dormant-specific expression patterns. Our results indicate that MdDHN genes are highly divergent in function, with overlapping levels, and that their expressions are fine-tuned by the environment during the dormancy process in apple.

Bibliographic Details

Main Authors:	FALAVIGNA, V. da S., MIOTTO, Y. E., PORTO, D. D., ANZANELLO, R., SANTOS, H. P. dos, FIALHO, F. B., MARGIS-PINHEIRO, M., PASQUALI, G., REVERS, L. F.
Other Authors:	Vítor da Silveira Falavigna, Universidade Federal do Rio Grande do Sul; Yohanna Evelyn Miotto; DIOGO DENARDI PORTO, CPATSA; Rafael Anzanello; HENRIQUE PESSOA DOS SANTOS, CNPUV; FLAVIO BELLO FIALHO, CNPUV; Márcia Margis-Pinheiro; Giancarlo Pasquali; LUIS FERNANDO REVERS, CNPUV.
Format:	Artigo de periódico biblioteca
Language:	Ingles English
Published:	2016-02-12
Subjects:	Dehydrin gene family, Apple, Dormencia de gema, Cold acclimation, During dormancy, Maçã, Fisiologia vegetal, Dormencia,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1036767
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